<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>homeworkday08</title>
    <style>
        *{
            width: 0;
            height: 0;
        }
.rotundity{

    width: 0;height: 0px;
    border-style: solid ;
    border-width: 100px 100px;
    border-color: white white black black;
    border-radius: 50%;
    box-shadow: 0 0 50px yellow;
}
.white{
    width: 100px;height: 100px;
    background-color: black;
    border-radius: 50%;
    position: absolute;
    top: 22px;
    left: 25px;

}
.black{
    width: 100px;height: 100px;
    background-color:white;
    border-radius: 50%;
    position: absolute;
    top: 88px;
    left: 100px;
}
.blackson{
    width: 50px;height: 50px;
    background-color: white;
    border-radius: 50%;
    position: absolute;
    top: 25px; 
    left: 25px;
}
.whiteson{
    width: 50px;height: 50px;
    background-color:black;
    border-radius: 50%;
    position: absolute;
    top: 25px; 
    left: 25px;
}
    </style>
</head>
<body>
    <div class="rotundity">
        <div class="white">
            <div class="blackson"></div>
        </div>
        <div class="black">
            <div class="whiteson"></div>
        </div>
    </div>
</body>
</html>